3. Internal off-stream inspection indicating severe chemical corrosion attack of carbon steel parts as well as severe longitudinal separation cracks follows the fusion line of welding seams in both of SS internal liner and external welding of CS flange.

4. If the corrosion was propagated more than observed damages, it could lead to catastrophic disaster, falling of Evaporator (consequences could be: personnel death/injuring, damaging of other equipment/piping, environmental pollution, production interruption….etc).